Remove debug code for serialization failure

[affifboudaoud]

This looks like forgotten debug code to me? It moves the files to the main directory with the names test.sdfg and test2.sdfg. I suggest we remove this or move the files to _dacegraphs instead.

[phschaad]

This was added to have them saved somewhere predictable for examination when the serialization test fails. I would vote for keeping the move command, but as you suggest, moving to _dacegraphs instead. Specifically, moving to _dacegraphs/serialization_failure_pre.sdfg and _dacegraphs/serialization_failure_post.sdfg or something like that.